Xiao Nangui was born in Lin Hangjing. In "A Beautiful Scene Knowing Geometry", Xiao Nangui is the son of Xiao Beichen and Lin Hangjing, younger than Shen Ke, so Shen Ke and Xiao Nangui are two people.
Lin Hangjing was pregnant with a child, but unfortunately she was killed by the vicious Zheng Fengqi. Five years later, Lin Hangjing returned as Sheng Hanjun and reunited with Xiao Beichen. After many hardships, Lin Hangjing and Xiao Beichen came together again and had a child, Xiao Nangui.
Looking for that at the end of A Beautiful Scene Knowing Geometry, Lin Hangjing took her and Xiao Beichen's son Xiao Nan back to America, waiting for Xiao Beichen's return. Someone in China sent a newspaper, which reported that Xiao Beichen was missing. Xiao Nangui saw Lin Hangjing's tears dripping on the newspaper, but the obedient one didn't bother Lin Hangjing.
Lin Hangjing remembered what Xiao Beichen had said to her before and firmly believed that Xiao Beichen would come back for her. A gust of wind blew the newspaper to the ground. Xiao Nangui ran over, picked up the newspaper and asked who the man in the photo was. Lin Hangjing held Xiao Nangui and told him that it was his father.